After Reinterop build,Unity compile error:

heo_flyfree · July 28, 2023, 3:26am

Assembly ‘Packages/com.cesium.unity/Reinterop.dll’ will not be loaded due to errors:
Unable to resolve reference ‘System.Collections.Immutable’. Is the assembly missing or incompatible with the current platform?
Reference validation can be disabled in the Plugin Inspector.
Unable to resolve reference ‘Microsoft.CodeAnalysis.CSharp’. Is the assembly missing or incompatible with the current platform?
Reference validation can be disabled in the Plugin Inspector.

Kevin_Ring · July 28, 2023, 3:50am

Not sure. We’re certainly not seeing that when building on our development or CI systems. What version of Unity are you using? Any unusual project settings? What platform?

heo_flyfree · July 28, 2023, 10:35am

I build cesium-unity follow this link:

github.com

CesiumGS/cesium-unity/blob/main/Documentation~/developer-setup.md

# Overview

This is a summary of the setup and workflows for developers who want to modify the Cesium for Unity plugin. If you just want to use Cesium for Unity in your own applications, see the main [README](../README.md).

## :computer: Building Cesium for Unity

### Prerequisites

* CMake v3.15 or later (the latest version is recommended)
* [.NET SDK v6.0 or later](https://dotnet.microsoft.com/en-us/download/dotnet/6.0)
* If you're using Visual Studio, you need Visual Studio 2022.
* Unity 2021.3+ (the latest version of the Unity 2021.3 LTS release is recommended)
* On Windows, support for long file paths must be enabled, or you are likely to see build errors. See [Maximum Path Length Limitation](https://learn.microsoft.com/en-us/windows/win32/fileio/maximum-file-path-limitation?tabs=registry#enable-long-paths-in-windows-10-version-1607-and-later).
* For best JPEG-decoding performance, you must have [nasm](https://www.nasm.us/) installed so that CMake can find it. Everything will work fine without it, just slower.

The built Cesium for Unity Assembly will run on much older versions of .NET, including the version of Mono included in Unity. However, these very recent versions are required for the C#<->C++ interop code generator (Reinterop).

To make sure things are set up correctly, open a command-prompt (PowerShell is a good choice on Windows) and run:

* `dotnet --version` and verify that it reports 6.0 or later

This file has been truncated. show original

Unity version 2022.3.3fc1,
Microsoft Visual Studio Community 2022 version17.6.5
All project settings are default settings

After I reopen the project,I got these errors:

Kevin_Ring · July 28, 2023, 10:55am

Those are very strange errors, which makes it hard to guess what has gone wrong. For example, why is Microsoft.CodeAnalysis.dll in your Packages/com.cesium.unity directory at all? It’s not included in our github repo, so how did it get there?

Just to be sure, you are building from the GitHub repo, right? You can’t follow the developer instructions by starting with the shipped Cesium for Unity package.

I think it might be worth starting over with a clean directory and following the instructions very carefully. Record each step you take so that if you have trouble you can share your exact steps and we can take a look.

Can I ask why you need to build Cesium for Unity yourself anyway, rather than using the pre-built package?

D_Dev · October 6, 2023, 1:25am

Hi Kevin,
I’m having the same issue atm, I’m building Cesium myself after adding support for more than just the main camera

Kevin_Ring · October 8, 2023, 7:46am

I think it might be worth trying to use a 2021.3 version of Unity to build the plugin, even if you plan to eventually use it in a newer version.

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After Reinterop build,Unity compile error:

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